Hi, I got an Asus vp249qgr 144hz but I can only get 120hz using HDMI-HDMI.

Take note that this monitor can use HDMI-HDMI and get 144hz. I am using this as an external monitor for my GPU Intel(R) Xe Graphics (my laptop is new DELL LATITUDE 7420), I updated everything and used some other tools but I cannot get 144hz, only max is 120Hz

why? this is the limit of the graphic card? ( I saw HDMI 2.0b, so I don't think so)

help, please!!